| 摘要 |
A method of exchanging the displacement element of a refrigerator having a divided housing whose parts can be separated from one another in such a manner that the displacement element becomes accessible, and a refrigerator structure which facilitates the method. In order to be able to exchange the displacement element in the cold state without the danger of condensation in the displacement element chamber, a stream of protective gas is maintained during opening of the housing, during the exchange of the displacement element and during closing of the housing so that undesirable gases are unable to penetrate into the displacement element work chamber. To facilitate the method, one of the parts of the housing has the work chamber formed therein and high and low pressure gas ports are provided in this part. The low pressure gas port is provided further than the high pressure gas port from an end of the work chamber which is open when the parts are separated, and the stream of protection gas is applied to the work chamber through the low pressure gas port.
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